Which example is a hydronium ion?

H3O+

H+

H2O

HO2 +

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?